Didn't James say something about them not meeting face-to-face on film? Anyway, I hope they don't shave his head bald for DoFP--it would just further emphasize the fact that they truly do not resemble each other in the slightest way. James' hair is enough for me to suspend my disbelief decently.

And I think if they met each other in the film, that might destroy the space time continuum.